Our pregnancy weight gain calculator helps you track healthy weight gain throughout your pregnancy based on IOM (Institute of Medicine) guidelines. By entering your pre-pregnancy weight, height, and current pregnancy information, you can see how your gain compares to recommended ranges for your BMI category.
Recommended weight gain varies by pre-pregnancy BMI: underweight (28-40 lbs), normal weight (25-35 lbs), overweight (15-25 lbs), and obese (11-20 lbs). The calculator shows your current gain, target range, and weekly rate to help you stay on track.
All calculations are performed locally in your browser. No data is stored or transmitted.
Track your pregnancy weight gain against recommended ranges